/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.api.java.operators;

import org.apache.flink.annotation.Internal;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;

/**
 * Resulting {@link DataSet} of bulk iterations.
 * @param <T>
 */
@Internal
public class BulkIterationResultSet<T> extends DataSet<T> {

	private final IterativeDataSet<T> iterationHead;

	private final DataSet<T> nextPartialSolution;

	private final DataSet<?> terminationCriterion;

	BulkIterationResultSet(ExecutionEnvironment context,
						TypeInformation<T> type,
						IterativeDataSet<T> iterationHead,
						DataSet<T> nextPartialSolution) {
		this(context, type, iterationHead, nextPartialSolution, null);
	}

	BulkIterationResultSet(ExecutionEnvironment context,
		TypeInformation<T> type, IterativeDataSet<T> iterationHead,
		DataSet<T> nextPartialSolution, DataSet<?> terminationCriterion) {
		super(context, type);
		this.iterationHead = iterationHead;
		this.nextPartialSolution = nextPartialSolution;
		this.terminationCriterion = terminationCriterion;
	}

	public IterativeDataSet<T> getIterationHead() {
		return iterationHead;
	}

	public DataSet<T> getNextPartialSolution() {
		return nextPartialSolution;
	}

	public DataSet<?> getTerminationCriterion() {
		return terminationCriterion;
	}
}
